Display screen or portion thereof with a graphical user interface of an electronic device



FIG. 1 is a front view of a first embodiment of a display screen with a graphical user interface of an electronic device;

FIG. 2 is a front view of a second embodiment of a display screen with a graphical user interface of an electronic device; and,

FIG. 3 is a front view of a third embodiment of a display screen with a graphical user interface of an electronic device.

The broken lines showing a display screen or portion thereof with a graphical user interface of an electronic device illustrate portions of the article, and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with a graphical user interface of an electronic device, as shown and described. 